Their pay is about $1500 per month. If I'm not mistaken, the way they've been doing that isn't in breach of NuLagoon's regulations; they are only obligated to put a small part of it in T1 which is presumed to be Poloniex. But ever since the launch of NuLagoon Tube they've become short of manpower, so NuLagoon can't perform very consistently.
While strictly speaking they might be getting in muddy waters, presenting a conflict of interest that could hinder the full execution of NuLagoon's contract, NuLagoon Tube is a reasonable extension to Nu's infrastructure. It's probably more beneficial to negotiate with NuLagoon to rewrite their contract and amend some regulatory stuff over this.